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https://issues.apache.org/jira/browse/FLINK-3554?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15177619#comment-15177619
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ASF GitHub Bot commented on FLINK-3554:
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Github user aljoscha commented on the pull request:
https://github.com/apache/flink/pull/1750#issuecomment-191695612
Yes, right now we favor correctness over completeness. For example in a
Count window, if we emitted an unfinished count window then the count of the
elements in the window would not be what the user specified.
For Event-Time windows we are correct in emitting a window upon arrival of
the final Long.MAX_VALUE watermark.
> Bounded sources should emit a Max Watermark when they are done
> --------------------------------------------------------------
>
> Key: FLINK-3554
> URL: https://issues.apache.org/jira/browse/FLINK-3554
> Project: Flink
> Issue Type: Bug
> Components: Streaming
> Affects Versions: 1.0.0
> Reporter: Stephan Ewen
> Assignee: Stephan Ewen
> Priority: Blocker
> Fix For: 1.0.0
>
>
> For proper event time support in bounded sources, these sources should emit a
> final watermark before shutting down.
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